+testsrc duration=5.3:size=qcif:rate=10
+testsrc2 duration=5.3:size=qcif:rate=10
+#threshold
+#thumbnail n=50
+tile layout=3x2:nb_frames=5:padding=7:margin=2
+tinterlace
+transpose
+treble
+tremolo
+#trim 5:15
+unsharp luma_msize_x=5:luma_msize_y=5:luma_amount=2.5
+uspp
+vaguedenoiser
+vectorscope